How do I use DF500 Domino to make perpendicular mortises

[Intex]

I am trying to use dominos to attach 5/8" x 1.25" x20' wood pieces to a wood base. I have made a jig to hold the pieces while I plunge (Festool Trim stop equivalent) and it has worked fine.
I know how to plunge down on the base if the pieces were going paralel to the edge, but how do I get very accurate and consistent resulkts while plunging perpendicular to the edge?

Do I need to make some kind of jig??

I have attached a picture for clarification

Thank you!

 

[squall_line]

If you already have the tape on there, draw the center line of the mortises through the whole lot and then use the marks on the fence to line up the Domino on the center line.

It's worth testing on a piece of scrap first to ensure that your fence's centerline/viewer is truly on center, but that seems to be the easiest way for me.

Maybe put a piece of scrap the same thickness as the piece next to it so that you don't tip the unit over the edge while plunging.

 

[ChuckM]

There are two ways you can do it, which are the same in principle but slightly different in execution. If I understand your requirements correctly as shown in the sketches below, your bit will be cutting perpendicularly (in a side-to-side fashion) to the edge.

The methods I suggest below assume you already know the technique of cutting a mortise using the intersecting lines method (the lines provided by the milled flats and by the center line scribed on the base). If not, I'll see if I can find the video for you, or someone can.

Method A requires you to draw both the vertical and horizontal lines to denote the center point of each mortise; B only the horizontal lines because the machine is positioned centered to each mortise via the use of its paddle and a registration strip:

(Edit: If you have a lot to do or you'll have to do the same again and again in the future, you can use spacers instead of drawing the horizontal lines to position the machine. If it's just a one-off thing, drawing is faster and simpler.)

[attachimg=1]

Like this

[attachimg=2]

 

[derekcohen]

I am trying to use dominos to attach 5/8" x 1.25" x20' wood pieces to a wood base. I have made a jig to hold the pieces while I plunge (Festool Trim stop equivalent) and it has worked fine.
I know how to plunge down on the base if the pieces were going paralel to the edge, but how do I get very accurate and consistent resulkts while plunging perpendicular to the edge?

Do I need to make some kind of jig??

I have attached a picture for clarification

Thank you!

Not vertical, but the same concept. I needed to create (custom) mortises at 14 degrees on chair seats. To do this, I made a jig to hold the Domino 500 ...



Marked and morticed ...





The positioning of the mortises was made using a fixture I wrote about here: https://www.festoolownersgroup.com/other-tools-accessories/using-a-domino-(dw500)-as-a-morticer/

Regards from Perth

Derek

 

[Intex]

Thank you all for the suggestions, I will try and incorporate them as I try to complete this
This weekend Ill try and get all the sticks mortised on both sides, then I will tackle the base and top, but using a test piece first

The vertical sticks I will mortise with the TIGHT cut, and on the UNERSIDE of the Top and tOP of the bottom base, I will use the MEDIUM setting to have some play so I can get all the sticks to align with the back edges of top and base.

I just noticed in the picture there was an extender plastic piece on the DF500, I can find mine, dont remember it being in the systainor.

 

[Intex]

Thank you for the pictures!!!!!

It reminded me to look for the bottom plate extender, which I just found in a box of festool accesies, and I also found a TRIM STOP, that I never remembered buying !!

 

[ChuckM]

Thank you for the pictures!!!!!

It reminded me to look for the bottom plate extender, which I just found in a box of festool accesies, and I also found a TRIM STOP, that I never remembered buying !!

The support bracket has two vital functions. One, to provide a larger registration surface and hence stability for the machine where needed.

The second one is missed by many users, but it's very handy when working with narrow stock where the paddles (edge stops) cannot be used. The paddles to the cutter's center is 37mm (fixed), but the flip tabs to the cutter is only 20mm, meaning that you can use the flip tabs like the paddles on, say, a board that's only 150mm wide.

 

[squall_line]

I thought that the DF500 paddles were 37mm to the center of the cutter?

 

[ChuckM]

Yes, 37mm; the error of 65mm is actually from the edge of the baseplate, which can also be used as the registration point.

 

[Intex]

OK, I have made all the mortises on the ends of the sticks (see picture), and now need to make the corresponding domino mortise in the top of the base and bottom of the top of the shelves.
I am using a scrap piece of wood (the real piece is 15" x 16" 1" Walnut) and the vertical sticks should register to the edge of the 15" side.
As shown in the picture with the festool, how and where do I register the Festool?
I know that the crosshairs go on the mid point of the tenon, and that works, but have no idea where it registers left-right, so I can make a jig of some sort to space them evenly

 

[squall_line]

As shown in the picture with the festool, how and where do I register the Festool?
I know that the crosshairs go on the mid point of the tenon, and that works, but have no idea where it registers left-right, so I can make a jig of some sort to space them evenly

I think the second picture in [member=57948]ChuckS[/member] 's post above is what you're looking for:https://www.festoolownersgroup.com/...e-perpendicular-mortises/msg710902/#msg710902

 

[Intex]

The only problem I am experiencing with the Domino 500, is that when I plunge down in the vertical poistion, since the plates ar very smooth, It tends to move all over the place.
I tried to clamp it down to the wood or table, but there is NO place to even put a small clamp.
I tiried to build a jig to hold it side to side, but there are some protrusions on either side, which do not let it register against anything
I tried to double tape it down, but the ridges on the plastic extension piece do not stick to anything

Am I doing something wrong? When you are using dominos to hold to pieces together and the the exact location is not an issue, this doesnt matter much, but when you need it to be DEAD ON, this becomes very tricky for me

 

[ChuckM]

If your goal is to hold down the machine firmly, make a larger support bracket yourself, or buy a TSO big foot
https://www.leevalley.com/en-ca/sho...MIjZDg89fqhAMVyhWtBh2D3AKUEAAYASAAEgLkafD_BwE

[attachimg=1]                [attachimg=2]

Btw, to increase purchase, I've treated my machine (fence) with a non-slip coating for ladder steps, etc.:
https://www.canadiantire.ca/en/pdp/...wL6EAQYBiABEgJpqfD_BwE&gclsrc=aw.ds#store=302

 

[derekcohen]

The only problem I am experiencing with the Domino 500, is that when I plunge down in the vertical poistion, since the plates ar very smooth, It tends to move all over the place.
I tried to clamp it down to the wood or table, but there is NO place to even put a small clamp.
I tiried to build a jig to hold it side to side, but there are some protrusions on either side, which do not let it register against anything
I tried to double tape it down, but the ridges on the plastic extension piece do not stick to anything

Am I doing something wrong? When you are using dominos to hold to pieces together and the the exact location is not an issue, this doesnt matter much, but when you need it to be DEAD ON, this becomes very tricky for me

See my earlier post as a prequel.

Since I use the Domino principally as a mortiser, making longer-than-standard mortises, I retracted all "protrusions" and line it on the centre marker.

Next, turn on the Domino before plunging, and then plunge slowly. This prevents the Domino jumping away from the central marker.

Through-tenons in chair legs need to be routed very exactly half-way from each side ...

The two central lines are the "central marker" lines for the Domino. They are made with this jig ...

Result ...

Regards from Perth

Derek